Photocatalytic removal of NO from coal-fired flue gas by H2O2/UV reaction over TiS catalyst

2017 ◽  
Vol 691 ◽  
pp. 1005-1017 ◽  
Author(s):  
Yanan Wang ◽  
Dong Jiang ◽  
Shule Zhang ◽  
Man Ou ◽  
Gang Bian ◽  
...  
Keyword(s):  
Flue Gas ◽  
Photocatalytic Removal

Experimental Study on Influence of Fly Ash on Mercury Removal in Flue Gas with UV Light

2013 ◽  
Vol 864-867 ◽  
pp. 1546-1551
Author(s):  
Yin Xia Cao ◽  
Ji Hui Fang ◽  
Jiang Wu ◽  
Xian Li ◽  
Chong Zhang ◽  
...  
Keyword(s):  
Fly Ash ◽  
Flue Gas ◽  
Uv Light ◽  
Mercury Content ◽  
Mercury Removal ◽  
Mercury Adsorption ◽  
Important Condition ◽  
Photocatalytic Effect ◽  
Photocatalytic Removal ◽  
Different Characteristics

The original fly ash samples fetched from the power plant and the treated fly ash samples after screening, magnetic separation and mixing were used in the experiment of photocatalytic removal on mercury in flue gas. The fly ash samples and the absorption solution after experiment were tested for mercury content. The results showed that different sizes of the original fly ash had different characteristics of photocatalytic removal of mercury. The adsorption of mercury by fly ash was an important condition for the occurrence of photocatalytic effect. When the mercury adsorption capacity of fly ash was stronger, the capacity of photocatalytic removal mercury was also greater. The presence of iron oxide on the fly ash surface can promote the capability of photocatalytic removal of mercury by fly ash. The presence of ultraviolet light can significantly promote Hg0 oxidize to Hg2+ by fly ash. Thus the oxidized mercury in the flue gas can be easily absorbed by the solution.

Solvents mediated-synthesis of 3D-BiOX (X = Cl, Br, I) microspheres for photocatalytic removal of gaseous Hg0 from the zinc smelting flue gas

Fuel ◽  
2020 ◽  
Vol 268 ◽  
pp. 117211 ◽  
Author(s):  
Ya-nan Zhou ◽  
Rui Li ◽  
Lei Tao ◽  
Renjun Li ◽  
Xueqian Wang ◽  
...  
Keyword(s):  
Flue Gas ◽  
Photocatalytic Removal ◽  
Zinc Smelting

Locomotive Boiler Flue Gas Analysis*

1912 ◽  
Vol 74 (1914supp) ◽  
pp. 159-160
Author(s):  
Lawford H. Fry
Keyword(s):  
Flue Gas ◽  
Gas Analysis

Could biomass-fueled boilers be operated at higher steam temperatures? Part 3: Initial analysis of costs and benefits

TAPPI Journal ◽  
2014 ◽  
Vol 13 (8) ◽  
pp. 65-78 ◽  
Author(s):  
W.B.A. (SANDY) SHARP ◽  
W.J. JIM FREDERICK ◽  
JAMES R. KEISER ◽  
DOUGLAS L. SINGBEIL
Keyword(s):  
Flue Gas ◽  
Power Plants ◽  
Superheated Steam ◽  
Black Liquor ◽  
Simulation Software ◽  
Operating Conditions ◽  
Costs And Benefits ◽  
Steam Generation ◽  
Fireside Corrosion ◽  
Corrosion Resistant

The efficiencies of biomass-fueled power plants are much lower than those of coal-fueled plants because they restrict their exit steam temperatures to inhibit fireside corrosion of superheater tubes. However, restricting the temperature of a given mass of steam produced by a biomass boiler decreases the amount of power that can be generated from this steam in the turbine generator. This paper examines the relationship between the temperature of superheated steam produced by a boiler and the quantity of power that it can generate. The thermodynamic basis for this relationship is presented, and the value of the additional power that could be generated by operating with higher superheated steam temperatures is estimated. Calculations are presented for five plants that produce both steam and power. Two are powered by black liquor recovery boilers and three by wood-fired boilers. Steam generation parameters for these plants were supplied by industrial partners. Calculations using thermodynamics-based plant simulation software show that the value of the increased power that could be generated in these units by increasing superheated steam temperatures 100°C above current operating conditions ranges between US$2,410,000 and US$11,180,000 per year. The costs and benefits of achieving higher superheated steam conditions in an individual boiler depend on local plant conditions and the price of power. However, the magnitude of the increased power that can be generated by increasing superheated steam temperatures is so great that it appears to justify the cost of corrosion-mitigation methods such as installing corrosion-resistant materials costing far more than current superheater alloys; redesigning biomassfueled boilers to remove the superheater from the flue gas path; or adding chemicals to remove corrosive constituents from the flue gas. The most economic pathways to higher steam temperatures will very likely involve combinations of these methods. Particularly attractive approaches include installing more corrosion-resistant alloys in the hottest superheater locations, and relocating the superheater from the flue gas path to an externally-fired location or to the loop seal of a circulating fluidized bed boiler.

Latent heat recovery from actual flue gas

2002 ◽  
Author(s):  
Masahiro Osakabe ◽  
Sachiyo Horiki ◽  
Tsugue Itoh ◽  
Ikuya Haze
Keyword(s):  
Latent Heat ◽  
Flue Gas ◽  
Heat Recovery ◽  
Actual Flue Gas
Sign in / Sign up

Export Citation Format

Share Document